346         CONTRIBUTIONS   TO    ECONOMIC   GEOLOGY,   1907,   PART   II. 
coal  beds  are  scarcely  more  than  traces  with  the  exception  of  the 
bed  stratigraphically  near  the  top,  which  shows  a  thickness  of  b\ 
feet  of  clear  coal.  This  bed  occurs  also  at  locality  No.  4,  and  carries 
good  coal  in  the  vicinity  of  Senorito.  The  following  is  a  detailed 
section  of  Mesaverde  at  this  locality: 
Section  of  Mesaverde  formation  at  Copper  City  (No.  6). 
Ft.    in. 
Sandstone,  massive 50 
Sandstone,  thin-bedded 5 
Shale,  carbonaceous 2 
Coal 5       G 
Shale,  brown 2 
Coal * 1 
Shale  and  thin  sandstone 32 
Shale,  brown,  carbonaceous 6 
Coal 2 
Sandstone,  grayish,  soft 12 
Coal G 
Shales,  drab  and  brown 13 
Coal 4 
Sandstones,  with  drab  and  brown  shales 50 
Shale,  brown,  carbonaceous 6 
Coal 2 
Shales,  drab  and  dark,  with  thin  sandstones 80 
Coal 4 
Sandstone,  thin,  and  shale 10 
Coal 4 
Shale,  brown 4 
Coal 1 
Shale,  dark 10 
Coal 4 
Shale,  dark 5 
Coal 3 
Shale,  brown 1 
Coal 9 
Sandstone,  thin,  and  shale 12 
Coal 6 
Shale,  carbonaceous 8 
Sandstone,  massive,  basal 50 
363       8 
Locality  No.  7:  At  locality  No.  7,  three-fourths  of  a  mile  west  of 
Senorito,  the  Senorito  bed  is  exposed,  dipping  70°  E.,  showing  the 
following  section: 
Section  of  Senorito  coal  bed  three-fourths  of  a  mile  west  of  Senorito  (No.  7). 
Ft.   in. 
Sandstone,  massive;  top  of  Mesaverde 50 
Shale,  brown,  carbonaceous,  slickensided 4 
Coal,  clear 4      6 
Shale,  brown,  carboneceous 10 
Covered.  — r 
68      0 
